Field help (GACTYP) 

This field is linked to the Belgian legislation.

The fee type is used by the 281.5 declaration automatic process.
An account can only receive one type of fees, therefore the user must create as many general ledgers as there are fee types. This field is visible if the activity code "Belgian 281.5 form" (BE281) is active.

For more information, refer to the  File 281.5 generation function.